news.ycombinator.com
Show HN: Vexp – graph-RAG context engine, 65-70% fewer tokens for AI agentshttps://news.ycombinator.com/item?id=47113273I've been building vexp for the past months to solve a problem that kept bugging me: AI coding agents waste most of their context window reading code they don't need.The problemWhen you ask Claude Code or Cursor to fix a bug, they typically grep around, cat a bunch of files, and dump thousands of lines into the context. Most of it is irrelevant. You burn tokens, hit context limits, and the agent loses focus on what matters.What vexp doesvexp is a local-first context engine that builds a semantic graph of your codebase (AST + call graph + import graph + change coupling from git history), then uses a hybrid search — keyword matching (FTS5 BM25), TF-IDF cosine similarity, and graph centrality — to return only the code that's actually relevant to the current task.The core idea is Graph-RAG applied to code:Index — tree-sitter parses every file into an AST, extracts symbols (functions, classes, types), builds edges (calls, imports, type references). Everything stored in a single SQLite file Feb 22, 2026 6:14 PM
news.ycombinator.com
Instance segmentation model that extracts 3D geometry from 2D floor planshttps://news.ycombinator.com/item?id=47092547Hey HN,I am an ML Engineer and a full-stack software engineer. For the past few weekends, I have been working on a pipeline to solve a PropTech problem: turning messy, highly occluded 2D floor plans into clean, structured data for 3D extrusion. Originally demoed for a firm hiring for the role.The Problem: If you try to use standard object detection (bounding boxes) or basic OCR (tested Qwen, DeepSeek) on architectural plans, it fails instantly. Walls intersect, doors swings and dimension lines heavily occlude the actual structures.The Stack & Architecture: I built an instance segmentation pipeline that relies strictly on pixel-perfect masking to pull the geometry.The Backbone: Swin Transformer + Detectron2.Model trained on 1024X1024 images, with RTX 4090Inference: Inference on CPUFeb 20, 2026 7:17 PM
news.ycombinator.com
Show HN: AFS – filesystem-native memory layer for AI agentshttps://news.ycombinator.com/item?id=47062802I've been building multi-agent AI pipelines and kept running into the same structural problem: agents are stateless by default. Every session restart discards everything they learned. In multi-agent systems it compounds — Agent-1 learns something Agent-2 will never know. I started calling it "agent amnesia." AFS is my attempt to fix this. The central architectural decision is unusual: your filesystem IS the memory layer. There's no separate database process to run, no cloud service to authenticate against. AFS stores memories as JSON files in a `.afs/` directory, with SQLite FTS5 for full-text search, HNSW indices for vector similarity, and msgpack-encoded graph edges for relationships. *Three-tier memory lifecycle (automatic)* Memories auto-migrate without explicit management: - Working memory (< 24h): raw observations, fast access, no compression- Episodic memory: full history with provenance, searchable - Semantic memory: auto-consolidated knowledge (scheduler synthesizes patterns fFeb 18, 2026 4:31 PM
coolwulfAI.com
Show HN: CoolWulf AI – A personal AI assistant built in Go, optimized for macOShttp://coolwulfAI.comHey HN,I've been building CoolWulf AI (https://coolwulfai.com), a self-hosted personal AI assistant. After seeing OpenClaw blow up, I wanted to share what I've been working on — a different approach to the same problem.*Why I built this:*I tried OpenClaw and found the Node.js/TypeScript stack heavy for what's essentially a local agent. pnpm, Node 22+, React — lots of moving parts. I wanted something that's a single binary, zero runtime dependencies, and feels native on macOS. So I built it in Go.*How it's different from OpenClaw:*- *Single binary, no runtime needed.* Download, set your API key, run. No Node.js, no pnpm, no build step. One ~100 MB binary. - *Built in Go.* Fast startup, low memory footprint, compiles to a native executable. No garbage collector pauses from a JS runtime sitting in the background. - *macOS-native integrations.* Deep AppleScript-based control of Apple Notes, Reminders, Calendar, Terminal.app, and WeChat desktop. These aren't browser hacks — they use the natFeb 17, 2026 5:32 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85e92d5c16479b804bf2c66c277431&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85ce59373c46dd829e4ff8737bb129&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85d4eac98b490f91ac7f1aadd4c111&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85d2baee5d48debccfce66d6ba7411&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85d8f630a0422c898130633dc55f6b&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85e71360dd4c78be479705a2f56926&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85dc76380044c498751ff99641c88a&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85e0a209b74079a849f4421b847736&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85e3828aac4085abc882ac68d588ad&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85d07cb4c04be892a85f302a0d26b2&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85eb518902401293e95deabdc698ae&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85e2cd9beb423ead3e82a4bd40c82f&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85e7c3401f48e6b8ec3a520d2a32b4&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85cda5255e4e1281b8d988ce958bec&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85d651ebb5435db8a86998a7510178&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
bing.com
Winter Olympics 2026: Report states China paid US-born athletes, including Eileen Gu, nearly $14 millionhttp://www.bing.com/news/apiclick.aspx&aid=&tid=6a85ec11b0b2421f94440651079d5506&url=https%3a%2f%2fwww.msn.com%2fen-us%2fnews%2fother%2fwinter-olympics-2026-report-states-china-paid-us-born-athletes-including-eileen-gu-nearly-14-million%2far-AA1WlvBF&c=12368850180310254287&mkt=en-usEver since Eileen Gu decided to compete under the flag of China, and not the United States where she was born, her citizenship has been the subject of scrutiny and controversy. Born in San Francisco, ...Feb 14, 2026 4:57 AM
